Patent US4424234A successfully refreshed from Google Patents.
Patent US3870333A successfully refreshed from Google Patents.
US3870333A
Expired / Lapsed
US
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Transportation cart
Assignee: Individual
•
Filing: 1973-09-17
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Granted: 1975-03-11
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Expires: 1993-09-17
Abstract
Abstract A transportation cart having a top surface shaped to provide a series of three distinct step forming platforms mounted on a tubular frame movably supported on stationary wheels at the back end of the cart and having swivel wheels at the front end of the cart, the cart having a handle at the back end adjacent the top step of the cart with a further shelf disposed beneath the handle intermediate the bottom side edges of the cart, and the step forming platforms each covered with a non-skid rubber surface such that a single individual may transport a plurality of articles on the platforms to the locations at which they are to be stacked on display shelves, with the individual then using the platforms in a ladder like manner to reach the uppermost display shelf for stacking the articles thereon.
Inventors
- 👤 Steve Burdick
- 👤 Roger Picard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:58
CPC Classifications
E; E06; E06C; E06C7/00; E06C7/08; E06C7/081; B; B62; B62B; B62B3/00; B62B3/008; B62B5/00; B62B5/04; B62B5/0438; B62B5/0485; E06C1/00; E06C1/02; E06C1/38; E06C1/397
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
333 words
A transportation cart for supporting articles at preselected heights in accordance with the heights of the shelves to which said articles are to be transferred and subsequently providing steps of consecutively ascending elevations as the lower said articles are sequentially removed therefrom, said transportation cart comprising: a. a frame including a rectangular base and having a front end and a back end; b. a plurality of horizontal platforms supported by said frame, each said platform extending transversely across said frame, each subsequently rearward platform being spaced above the adjacent forward platform; c. a handle extending rearward from the rearwardmost said platform; d. a first pair of spaced support wheels depending from said base proximate the back thereof, said wheels rotatable about a common axis which is horizontal in one direction and perpendicular to said frame in the other direction; e. a second pair of spaced support wheels depending from said base proximate the front thereof, said wheels being rotatable about a horizontal axis and pivotal about a vertical axis; and f. selective brake means associated with each of said first pair of support wheels including i. an elongate lever having an upper end and a lower end and pivotally connected to said base for rotation about a horizontal axis intermediate said upper end and said lower end, ii. a flat arcuate member secured to said lever and having a face abutting said base, iii. first and second spaced detents projecting from the face of said arcuate member and arranged to sequentially and operatively engage said base as said lever is rotated about its axis, iv. wheel engaging means carried proximate the lower end of said lever, and v. handle means proximate the upper end of said lever, whereby movement of said handle in one direction urges said wheel engagIng means against one of said first wheel and engages said first detent and movement of said lever in the opposite direction spaces said wheel engaging means from said wheel and engages said second detent.
Claim 2
Dependent Claim
333 words
A transportation cart for supporting articles at preselected heights in accordance with the heights of the shelves to which said articles are to be transferred and subsequently providing steps of consecutively ascending elevations as the lower said articles are sequentially removed therefrom, said transportation cart comprising: a. a frame including a rectangular base and having a front end and a back end; b. a plurality of horizontal platforms supported by said frame, each said platform extending transversely across said frame, each subsequently rearward platform being spaced above the adjacent forward platform; c. a handle extending rearward from the rearwardmost said platform; d. a first pair of spaced support wheels depending from said base proximate the back thereof, said wheels rotatable about a common axis which is horizontal in one direction and perpendicular to said frame in the other direction; e. a second pair of spaced support wheels depending from said base proximate the front thereof, said wheels being rotatable about a horizontal axis and pivotal about a vertical axis; and f. selective brake means associated with each of said first pair of support wheels including i. an elongate lever having an upper end and a lower end and pivotally connected to said base for rotation about a horizontal axis intermediate said upper end and said lower end, ii. a flat arcuate member secured to said lever and having a face abutting said base, iii. first and second spaced detents projecting from the face of said arcuate member and arranged to sequentially and operatively engage said base as said lever is rotated about its axis, iv. wheel engaging means carried proximate the lower end of said lever, and v. handle means proximate the upper end of said lever, whereby movement of said handle in one direction urges said wheel engagIng means against one of said first wheel and engages said first detent and movement of said lever in the opposite direction spaces said wheel engaging means from said wheel and engages said second detent.
Claim 3
Dependent Claim
333 words
A transportation cart for supporting articles at preselected heights in accordance with the heights of the shelves to which said articles are to be transferred and subsequently providing steps of consecutively ascending elevations as the lower said articles are sequentially removed therefrom, said transportation cart comprising: a. a frame including a rectangular base and having a front end and a back end; b. a plurality of horizontal platforms supported by said frame, each said platform extending transversely across said frame, each subsequently rearward platform being spaced above the adjacent forward platform; c. a handle extending rearward from the rearwardmost said platform; d. a first pair of spaced support wheels depending from said base proximate the back thereof, said wheels rotatable about a common axis which is horizontal in one direction and perpendicular to said frame in the other direction; e. a second pair of spaced support wheels depending from said base proximate the front thereof, said wheels being rotatable about a horizontal axis and pivotal about a vertical axis; and f. selective brake means associated with each of said first pair of support wheels including i. an elongate lever having an upper end and a lower end and pivotally connected to said base for rotation about a horizontal axis intermediate said upper end and said lower end, ii. a flat arcuate member secured to said lever and having a face abutting said base, iii. first and second spaced detents projecting from the face of said arcuate member and arranged to sequentially and operatively engage said base as said lever is rotated about its axis, iv. wheel engaging means carried proximate the lower end of said lever, and v. handle means proximate the upper end of said lever, whereby movement of said handle in one direction urges said wheel engagIng means against one of said first wheel and engages said first detent and movement of said lever in the opposite direction spaces said wheel engaging means from said wheel and engages said second detent.
Claim 4
Dependent Claim
333 words
A transportation cart for supporting articles at preselected heights in accordance with the heights of the shelves to which said articles are to be transferred and subsequently providing steps of consecutively ascending elevations as the lower said articles are sequentially removed therefrom, said transportation cart comprising: a. a frame including a rectangular base and having a front end and a back end; b. a plurality of horizontal platforms supported by said frame, each said platform extending transversely across said frame, each subsequently rearward platform being spaced above the adjacent forward platform; c. a handle extending rearward from the rearwardmost said platform; d. a first pair of spaced support wheels depending from said base proximate the back thereof, said wheels rotatable about a common axis which is horizontal in one direction and perpendicular to said frame in the other direction; e. a second pair of spaced support wheels depending from said base proximate the front thereof, said wheels being rotatable about a horizontal axis and pivotal about a vertical axis; and f. selective brake means associated with each of said first pair of support wheels including i. an elongate lever having an upper end and a lower end and pivotally connected to said base for rotation about a horizontal axis intermediate said upper end and said lower end, ii. a flat arcuate member secured to said lever and having a face abutting said base, iii. first and second spaced detents projecting from the face of said arcuate member and arranged to sequentially and operatively engage said base as said lever is rotated about its axis, iv. wheel engaging means carried proximate the lower end of said lever, and v. handle means proximate the upper end of said lever, whereby movement of said handle in one direction urges said wheel engagIng means against one of said first wheel and engages said first detent and movement of said lever in the opposite direction spaces said wheel engaging means from said wheel and engages said second detent.
Claim 5
Dependent Claim
21 words
The transportation cart of claim 1, further including a horizontal shelf carried by said frame and spaced below the rearmost platform.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |